Most see airport security as a pain. Some feel violated. When you watch the below pics, you'll understand why they want your cell phone through the x-ray machine. If you get asked to test your cell phone at the airport, this is the reason. Cell phone guns have arrived.
They are real.

Beneath the digital phone face is a .22 caliber handgun capable of firing four rounds in rapid succession using the standard telephone keypad. European law enforcement officials are stunned by the discovery of these deadly decoys. They say phone guns are changing the rules of engagement in Europe. Only when you have one in your hand do you realize that they are heavier than a regular cell phone.